I have been working full time for 20 years. My plan is to leave my job 2011 and work locally part time there after. Using the SS calculator at the SS Gov website shows my benefits to be pretty good at my current expected level of income even if I stop working 2011. But if my income in my new job is half that amount for the last 15 years before retirement would my SS benefit calulation be based on the new lower income amount? I would like to think I can return to the work force after my first career. Thanks.